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Ninety psoriasis patients, who were either completely cleared of or manifested only a minimal presence of disease signs following 3–4 weeks of twice daily treatment with augmented betamethasone dipropionate (ABD) ointment 0.05%, were enrolled in this multicenter, double-blind, placebo-controlled study. The study was designed to determine if an intermittent pulse dose regimen of ABD ointment could safely and effectively maintain a remission disease status when treatment was applied in three consecutive applications 12 h apart, once a week for a maximum treatment period of 6 months. The disease of 60% of the patients in the active treatment group was successfully controlled for 6 months, while 80% of the placebo-treated patients experienced exacerbation of disease signs. No serious local or systemic treatment-related adverse experiences were reported. ABD ointment 0.05% when applied using the intermittent treatment regimen described here, was shown to be a clinically beneficial and well-tolerated method of long-term (up to 6 months) maintenance therapy for psoriasis patients.

Current therapy for condylomata acuminata (genital warts) is not consistently effective. Therefore, we conducted a randomized, double-blind trial to compare interferon alpha-2b with placebo in the treatment of this disorder. Our rationale was that interferon has both antiproliferative and antiviral properties. The placebo or interferon (1 X 10(6) IU) was injected directly into one to three warts three times weekly for three weeks. The injections were well tolerated by both groups of patients. The side effects of fever, chills, myalgia, headache, fatigue, and leukopenia occurred more commonly in the interferon group than in the placebo group, but such effects rarely disrupted daily routines. Only 13 of 296 patients (4 percent) discontinued therapy because of side effects (11 in the interferon group and 2 in the placebo group). Twenty-six other patients were excluded from analysis because of a loss to follow-up or other deviations from protocol, thus leaving 257 patients in the final evaluation. At one week after the completion of therapy, interferon had produced a large and significantly greater reduction in mean wart area (a 62.4 percent decrease), as compared with placebo (a 1.2 percent increase in mean area) (P less than 0.001). At the conclusion of the study (13 weeks after the completion of therapy), the mean wart area was still decreased 39.9 percent below the initial size in the interferon group, whereas it had increased by 46 percent over base-line measurements in the placebo group (P less than 0.001). At the same time, all treated warts had completely cleared in 36 percent of the interferon recipients and in 17 percent of the placebo recipients (P less than 0.001), whereas treated warts progressed in 13 percent of the interferon recipients and in 50 percent of the placebo recipients (P less than 0.001). We conclude that injection of interferon alpha-2b directly into genital warts appears to be an effective and fairly well-tolerated form of therapy.

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